break off

Short definition from Wiktionary

Verb

1. 1
   To remove a piece from a whole by breaking or snapping.
2. 2
   To become detached by breaking or snapping.
3. 3
   To discontinue abruptly.
4. 4
   To end abruptly, either temporarily or permanently.
5. 5
   To play the first shot in a frame of snooker, billiards or pool.
6. 6
   To give (someone) (something); to allow (someone) to take (something); to grant (someone) a share or portion of (something).
7. 7
   Nonstandard form of break off (“to play the first shot in a frame of snooker, billiards or pool”).

Noun

1. 1
   That which breaks off, or is broken off
2. 2
   A break, discontinuance, or interruption
3. 3
   The first shot in a game of snooker or other cue-game